/
types.go
219 lines (178 loc) · 4.97 KB
/
types.go
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package bank
import (
"errors"
"fmt"
sdk "github.com/gridironzone/service-sdk-go/types"
)
const (
maxMsgLen = 5
ModuleName = "bank"
TypeMsgSend = "send"
TypeMsgMultiSend = "multisend"
)
var _ sdk.Msg = &MsgSend{}
// NewMsgSend - construct a msg to send coins from one account to another.
//nolint:interfacer
func NewMsgSend(fromAddr, toAddr sdk.AccAddress, amount sdk.Coins) *MsgSend {
return &MsgSend{
FromAddress: fromAddr.String(),
ToAddress: toAddr.String(),
Amount: amount,
}
}
// Route Implements Msg.
func (msg MsgSend) Route() string { return ModuleName }
// Type Implements Msg.
func (msg MsgSend) Type() string { return TypeMsgSend }
func (msg MsgSend) ValidateBasic() error {
_, err := sdk.AccAddressFromBech32(msg.FromAddress)
if err != nil {
return errors.New("invalid sender address")
}
_, err = sdk.AccAddressFromBech32(msg.ToAddress)
if err != nil {
return errors.New("invalid recipient address")
}
if !msg.Amount.IsValid() {
return errors.New("invalid coins")
}
if !msg.Amount.IsAllPositive() {
return errors.New("invalid coins")
}
return nil
}
// GetSignBytes Implements Msg.
func (msg MsgSend) GetSignBytes() []byte {
return sdk.MustSortJSON(ModuleCdc.MustMarshalJSON(&msg))
}
// GetSigners Implements Msg.
func (msg MsgSend) GetSigners() []sdk.AccAddress {
from, err := sdk.AccAddressFromBech32(msg.FromAddress)
if err != nil {
panic(err)
}
return []sdk.AccAddress{from}
}
var _ sdk.Msg = &MsgMultiSend{}
// NewMsgMultiSend - construct arbitrary multi-in, multi-out send msg.
func NewMsgMultiSend(in []Input, out []Output) *MsgMultiSend {
return &MsgMultiSend{Inputs: in, Outputs: out}
}
func (msg MsgMultiSend) Route() string { return ModuleName }
// Type Implements Msg
func (msg MsgMultiSend) Type() string { return TypeMsgMultiSend }
// Implements Msg.
func (msg MsgMultiSend) ValidateBasic() error {
// this just makes sure all the inputs and outputs are properly formatted,
// not that they actually have the money inside
if len(msg.Inputs) == 0 {
return errors.New("invalid input coins")
}
if len(msg.Outputs) == 0 {
return errors.New("invalid output coins")
}
// make sure all inputs and outputs are individually valid
var totalIn, totalOut sdk.Coins
for _, in := range msg.Inputs {
if err := in.ValidateBasic(); err != nil {
return err
}
totalIn = totalIn.Add(in.Coins...)
}
for _, out := range msg.Outputs {
if err := out.ValidateBasic(); err != nil {
return err
}
totalOut = totalOut.Add(out.Coins...)
}
// make sure inputs and outputs match
if !totalIn.IsEqual(totalOut) {
return errors.New("inputs and outputs don't match")
}
return nil
}
// GetSignBytes Implements Msg.
func (msg MsgMultiSend) GetSignBytes() []byte {
return sdk.MustSortJSON(ModuleCdc.MustMarshalJSON(&msg))
}
// GetSigners Implements Msg.
func (msg MsgMultiSend) GetSigners() []sdk.AccAddress {
addrs := make([]sdk.AccAddress, len(msg.Inputs))
for i, in := range msg.Inputs {
addr, _ := sdk.AccAddressFromBech32(in.Address)
addrs[i] = addr
}
return addrs
}
// ValidateBasic - validate transaction input
func (in Input) ValidateBasic() error {
_, err := sdk.AccAddressFromBech32(in.Address)
if err != nil {
return err
}
if in.Coins.Empty() {
return errors.New("empty input coins")
}
if !in.Coins.IsValid() {
return fmt.Errorf("invalid input coins [%s]", in.Coins)
}
if !in.Coins.IsAllPositive() {
return fmt.Errorf("invalid input coins [%s]", in.Coins)
}
return nil
}
// NewInput - create a transaction input, used with MsgMultiSend
//nolint:interfacer
func NewInput(addr sdk.AccAddress, coins sdk.Coins) Input {
return Input{
Address: addr.String(),
Coins: coins,
}
}
// ValidateBasic - validate transaction output
func (out Output) ValidateBasic() error {
_, err := sdk.AccAddressFromBech32(out.Address)
if err != nil {
return fmt.Errorf("invalid output address (%s)", err)
}
if out.Coins.Empty() {
return errors.New("empty input coins")
}
if !out.Coins.IsValid() {
return fmt.Errorf("invalid input coins [%s]", out.Coins)
}
if !out.Coins.IsAllPositive() {
return fmt.Errorf("invalid input coins [%s]", out.Coins)
}
return nil
}
// NewOutput - create a transaction output, used with MsgMultiSend
//nolint:interfacer
func NewOutput(addr sdk.AccAddress, coins sdk.Coins) Output {
return Output{
Address: addr.String(),
Coins: coins,
}
}
// ValidateInputsOutputs validates that each respective input and output is
// valid and that the sum of inputs is equal to the sum of outputs.
func ValidateInputsOutputs(inputs []Input, outputs []Output) error {
var totalIn, totalOut sdk.Coins
for _, in := range inputs {
if err := in.ValidateBasic(); err != nil {
return err
}
totalIn = totalIn.Add(in.Coins...)
}
for _, out := range outputs {
if err := out.ValidateBasic(); err != nil {
return err
}
totalOut = totalOut.Add(out.Coins...)
}
// make sure inputs and outputs match
if !totalIn.IsEqual(totalOut) {
return errors.New("sum inputs != sum outputs")
}
return nil
}